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Nikon DSLR Cameras
D7100
EV values in display?
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<blockquote data-quote="jimalexander" data-source="post: 308683" data-attributes="member: 25235"><p>WayneF</p><p></p><p>The sources you cite don't mention ISO, and I feel comfortable assuming your sources are older than mine by the look of them, so I concede you are probably right that was the original meaning and definition of EV. I also know the EV scale is logarithmic and I'm not sure if the ISO stops are truly logarithmic stops or just linear multipliers. The three-part method I use is probably not spot on if it is mincing logs and linear stops... it is probably close enough for practical photography but not accurate enough to be completely true. Thanks for throwing out your sources<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>I have found the method I was taught invaluable (even if not entirely true to the terms, meanings and math) in that I can go into a room at 9 EV and come to a recipe like 3 stops aperture, 3 stops ISO (800) and 6 stops shutter speed and be ready to shoot, and I can cut shutter speeds in low light by the same number of stops in increasing ISO. Anyway...</p><p></p><p>Thanks for the lesson.</p><p></p><p>Jim</p></blockquote><p></p>
[QUOTE="jimalexander, post: 308683, member: 25235"] WayneF The sources you cite don't mention ISO, and I feel comfortable assuming your sources are older than mine by the look of them, so I concede you are probably right that was the original meaning and definition of EV. I also know the EV scale is logarithmic and I'm not sure if the ISO stops are truly logarithmic stops or just linear multipliers. The three-part method I use is probably not spot on if it is mincing logs and linear stops... it is probably close enough for practical photography but not accurate enough to be completely true. Thanks for throwing out your sources:) I have found the method I was taught invaluable (even if not entirely true to the terms, meanings and math) in that I can go into a room at 9 EV and come to a recipe like 3 stops aperture, 3 stops ISO (800) and 6 stops shutter speed and be ready to shoot, and I can cut shutter speeds in low light by the same number of stops in increasing ISO. Anyway... Thanks for the lesson. Jim [/QUOTE]
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Nikon DSLR Cameras
D7100
EV values in display?
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